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The tires lose contact with the road.
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The trailer disengages from the tractor.
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The vehicle becomes easier to control.
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Kentucky CDL Permit Test - Double
(From the 2020 Kentucky CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 16 |
Directions:
This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three possible answer choices. Test questions come from the Kentucky Commercial Driver License Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
Passing grade —
4 or fewer errors
advertising
1.
What happens when a vehicle hydroplanes?
2.
Antifreeze helps to keep an engine functioning properly:
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But only if it is cold outside.
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To be more fuel efficient.
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Both when it is cold and hot outside.
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3.
Once cargo is secured onto a vehicle:
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You do not need to inspect the cargo.
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You should not let others inspect the cargo.
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You should check the cargo every 150 miles.
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4.
After starting the engine, the Anti-Lock Braking System (ABS) light stays on if:
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The ABS is working properly.
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The ABS is not working properly.
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The ABS is not engaged.
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5.
Roads are especially slippery when it first begins to rain because:
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Water is always very slippery.
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The fresh rain mixes with oil on the roadway.
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The water has nowhere to go.
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6.
If making a tight turn, the operator of a CMV should:
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Be able to drive as fast as the driver of a car.
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Not be concerned about speed, but focus on the road.
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Warn drivers behind by braking early and slowing gradually.
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7.
To check the automatic transmission fluid level in some vehicles, you will have to:
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Park your vehicle uphill.
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Park your vehicle downhill.
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Leave the vehicle running.
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